On 0.1.1 and the save doesn't work.Error: Uncaught Error: prompt() is not and will not be supported.
I remember helping another creator out with these errors. Let me go see if I can find it in my comment history.
https://www.google.com/search?q=twine+story+prompt%28%29+is+not+and+will+not+be+...
No longer an issue in the new update.